<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" id="i1" placeholder="姓名">
<input type="text" id="i2" placeholder="工资">
<input type="text" id="i3" placeholder="工作">
<input type="button" value="添加" onclick="f()">
<table border="1">
  <tr>
    <th>姓名</th>
    <th>工资</th>
    <th>工作</th>
  </tr>
</table>
<script>
   /* let i1 = document.querySelector("#i1");
    let i2 = document.querySelector("#i2");
    let i3 = document.querySelector("#i3");*/
    let table = document.querySelector("table");
    function f(){
        let tr = document.createElement("tr")
        let nameTd = document.createElement("td")
        let salaryTd = document.createElement("td")
        let jobTd = document.createElement("td")
        nameTd.innerText = i1.value;
        salaryTd.innerText = i2.value;
        jobTd.innerText = i3.value;
        tr.append(nameTd,salaryTd,jobTd);
        table.append(tr);
    }
</script>
</body>
</html>